RE: [Xen-devel] Re: system freeze when processor.ko is loaded during boot

["Liu, Jinsong" <jinsong.liu@xxxxxxxxx>]

Yeah, sounds reasonable :)

CC Haitao into circle who will continue take care of the bug.

Thanks,
Jinsong

Jan Beulich wrote:
>>>> On 29.03.11 at 00:48, Martin Wilck <mwilck@xxxxxxxx> wrote:
>> Here is one more capture. It shows that (unfortunately)
>> clocksource=pit doesn't help here, and that the xen watchdog hits if
>> I configure it (just that the reboot doesn't work, and I can only
>> see the output since I've been using the serial console).
> 
> The stack evaluates to
> 
> logarithmic_accumulation
> update_wall_time
> do_timer(0x898d7)
> tick_do_update_jiffies64
> tick_sched_timer
> __run_hrtimer
> hrtimer_interrupt
> timer_interrupt
> 
> (matches the previously sent one, just that there the tick count
> passed to do_timer() is "only" 0x179ab.
> 
> So the kernel, afaict, is busy recovering from the time jump in Xen.
> 
> It is clearly also a bad sign that the NMI hit while Dom0 was
> executing, as that guarantees interrupts aren't disabled (and
> hence timer interrupts can occur, and timers would not be
> prevented from running - presumably the time jump suppressed
> the invocation of, among others, the NMI timer).
> 
> Jan


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